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(No Model.) 2 Sheets-Sheet 1.. O. B. BOCANDE.

TURN TABLE SWITCH FOR SINGLE LINE ELEVATED RAILWAYS.

No. 391,294. Patented Oct. 16, 1888.

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(No Model.) I 2 Sheets-Sheet 2.

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TURN TABLE SWITCH EOE SINGLE LINE ELEVATED RAILWAYS.

No. 391,294. Patented Oct. 16, 1888.

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OLIVIER BERTRAND BOCANDE, OF ASNIERES, FRANCE, ASSIGNOR TO THE LARTIGUE RAILW'AY CONSTRUCTION COMPANY, (LIMITED,) OF LONDON,

ENGLAND.

TURN-TABLE SWITCH FOR SINGLE-LINE ELEVATED RAILWAYS.

SPECIFICATION forming part of Letters Patent No. 391,294, dated October 16, 1888.

Application filed May 17, 1888. Serial No. 274,148. (No model.) Patented in England July 12, 1887, No. 9,816; in France April 12, 1888, No. 189,911, and in Belgium April 12, 1888, No. 81, 116.

To all whom it may concern.-

Be it known that I. OLIVIER BERTRAND BOCANDE, a citizen of France, residing at Asnieres, 17 Rue de Normandie, France, engineer, have invented a new and useful Turn- Table Switch for Single-Line Elevated Railways, (for which I have obtained a patent in Great Britain, No. 9,816, dated July12, 1887; in France, No. 189,911, dated April 12, 1888, and in Belgium, No. Shelli, dated April 12, 1888,) of which the following is a specification.

My invention relates to the construction and arrangement of turn table switches for singleline elevated railways, the apparatus which I will describe for this purpose being applicable either as a simple turn-table to reverse engines or carriages or as a switch to run a train continuously fiom one of a number of converging lines onto another of these, as I will explain,referring to the accompanying drawings.

Figure 1 is a diagrammatic ground plan showing the turn-table at the meeting of a number of converging lines. Fig. 2 is a transverse section of the switch turntable. Fig. 3 is a plan of the same.

Referring to Fig. 1, A B C D E F G represent a number of lines of rails, either straight, as A, D, and F, or curved, as B, O, E, and G, arranged uniformly around and abutting on a turn-table, T. The straight lines A D F converge radially to the center, P, of the turntable, and the curved lines B O E G, whether they bend to right or left, should be such that the tangents to the curves at those points of them where they abut on the circumference of the turn-table also converge radially to the center, P. The lines A B O D E F G being thus arranged and formed, there is fixed on the turntable a curved rail, H K L, of such curvature that two of the converging radii which are nearly opposite to one another, like A and E, are tangents to the curve at its extreme points, H and L. Along this curved rail a train can obviously be run continuously from A to E, or by turning the turn-table so as to bring the ends H L of the curve into coincidence with another pair of lines-such as B and F, Cand G, or D and A-it can be run from any one of those lines to the other; also, an engine or carriagc, or several of these, may be run onto the line H K L, and can be reversed by turning the table and run back to the line from whence it was run.

Referring now to Figs. 2 and 3,which show to an enlarged scale the construction of turntable applicable in the manner set forth with reference to Fig. 1, the single elevated rail R and the lateral guide-rails G G are carried, as usual, on standards S, several of which may be required to carry the length of curved rails H K L, Fig. 1, according to the dimension of the turn-table T. The bases of the standards S are bolted or riveted to the plate T, forming the upper face of the turn-table. This plate is carried on a. framing, F, which turns on a vertical center pin, P, projecting up from the stationary base B. On this base are formed two lines of circular rail, 0 and D, on which run wheels V and IV, mounted in the framin F.

Iiaving thus described the nature of this invention and the best means I know for carrying the same into practical effect, I claim-- 1. A turn-table switch for singleline elevated railways having as its center the point to which radiate several lines or their tangents, arranged uniformly around it and having on it a curved rail tangential to two of these lines that are nearly opposite to one another, substantially as and for the purpose set forth.

2. In a turn-table switch for singleline elevated railways, the combination,with a circular stationary base, B, of the rectangular turning frame T, carrying the rail-standards and mounted upon the center pin, P, in such man ner that the wheels V V, supporting the ends thereof, move in circles of different diameter, substantially as described.

In testimony whereof I have signed my name to this spccification,in the presence oftwo subscribing witnesses, this 23d day of April, A. D. 1888.,

OLIVIER )ERIRAND BOCANDE.

W'itncsses:

O. LARTORIN,

64 Quai cZe Seine, Courbevoic. F. SERRIER,

47 Rue de Normandie, Asmrcs. 

